Geology (58/229)

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Jasper crystals on red Gypsum. Teruel, Spain. Jasper is an opaque and usually colorful variety of quartz, or silicon dioxide.
Jasper crystals on red Gypsum. Teruel, Spain. Jasper is an opaque and usually colorful variety of quartz, or silicon dioxide.
Filename: GLMFL79.jpg
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